1552740138619 has 4 divisors (see below), whose sum is σ = 1561318813600. Its totient is φ = 1544161463640.

The previous prime is 1552740138581. The next prime is 1552740138647. The reversal of 1552740138619 is 9168310472551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1552740138619 - 2³⁹ = 1002984324731 is a prime.

It is a super-2 number, since 2×1552740138619² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552740130619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4289337219 + ... + 4289337580.

It is an arithmetic number, because the mean of its divisors is an integer number (390329703400).

It is a 1-persistent number, because it is pandigital, but 2⋅1552740138619 = 3105480277238 is not.

Almost surely, 2^{1552740138619} is an apocalyptic number.

1552740138619 is a deficient number, since it is larger than the sum of its proper divisors (8578674981).

1552740138619 is an equidigital number, since it uses as much as digits as its factorization.

1552740138619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578674980.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 1552740138619 in words is "one trillion, five hundred fifty-two billion, seven hundred forty million, one hundred thirty-eight thousand, six hundred nineteen".